I have two that I always go to that weren't listed. Pet Supplies Plus carries a variety of high quality feed with little to no preservatives.
Also when you're in Houston in Texas, stop by Rocky & Maggie's Pet Shop
I love pet stores and the fuzzy/scaly/furry/slimy guys you can find in them, too! And I'm not talking about to employees!
An online pet store I've had very good luck with is DoggyLoot. One huge advantage is free shipping on all pet supplies, whether its rawhides or dog beds. Once you sign up, they will send daily notifications of Specials to your email but I don't mind glancing through them and I've gotten some really good deals with very fast shipping. When I order rawhides, I usually receive my order in 2-3 days.
Some of the current specials going right now are:
10 12-inch bully sticks for $26
12 oz. package of 8-inch Achilles Tendons for $16
Nerf Football Launchers for $13
60 Venison Sausages for $16
3 Grade-A Antler Chews for $27
10 Low-Odor 6-inch bully sticks for $19 (This is my order of choice. These are really nice, fat bully sticks and I have two heavy chewers so these work out very well for me and them!)
They have a ton of stuff with different items added each day. So if interested, check them out,just type in https://doggyloot.com/deals